# Gas Pipe Sizing Calculator vs Ruud

The clearest difference is price: Ruud at Free against Gas Pipe Sizing Calculator's $1.99. Ruud also leads on rating (4.6 vs 4.0) and review sentiment (50% vs 13%). Gas Pipe Sizing Calculator's advantage is iOS requirement (12.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Ruud is free to download; Gas Pipe Sizing Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Ruud holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Ruud has 1.1K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 13% of Gas Pipe Sizing Calculator's written reviews are positive against 50% of Ruud's.

Gas Pipe Sizing Calculator ships an update every 13 months, Ruud monthly. The most recent releases landed on October 15, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Gas Pipe Sizing Calculator | Ruud |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/gas-pipe-sizing-calculator/id596009129/reviews) | **[4.6 (1.1K ratings)](https://appshunter.io/ios/app/ruud/id1608918835/reviews)** |
| Number of ratings | 4 | **1.1K** |
| Positive reviews | 13.3% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 0 MB | 112 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Connor Kelley](https://appshunter.io/developer/596009132) | [Rheem Manufacturing Company](https://appshunter.io/developer/853793269) |

## What reviewers say

### Gas Pipe Sizing Calculator

[App page](https://appshunter.io/ios/app/gas-pipe-sizing-calculator/id596009129)

This utility app simplifies gas pipe sizing by performing calculations based on BTU load, run length, and gas type. It eliminates the need for manual chart and codebook referencing, providing the minimum required pipe size quickly.

**Highlights:** Calculates minimum gas pipe size, Input BTU load, Input longest run length, Select gas type (LP or Natural), Designed for low pressure (0.5psi)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Ruud

[App page](https://appshunter.io/ios/app/ruud/id1608918835)

This app streamlines HVAC installation, service, and support for contractors. It offers Bluetooth connectivity for system setup and troubleshooting, along with access to product information, warranty tracking, and dealer locators.

**Highlights:** Bluetooth setup and troubleshooting, System operating parameter monitoring, Alarm diagnosis and history, Access installation instructions and manuals, Track warranty information, Locate retailers and distributors, Find rebate and financing information

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Gas Pipe Sizing Calculator free?

Gas Pipe Sizing Calculator costs $1.99, with no in-app purchases.

### Is Ruud free?

Ruud is free to download, with no in-app purchases.

### Which has better reviews, Gas Pipe Sizing Calculator or Ruud?

Ruud is rated higher. Gas Pipe Sizing Calculator averages 4.0 out of 5 from 4 ratings, while Ruud averages 4.6 from 1.1K ratings.

### Do Gas Pipe Sizing Calculator or Ruud have ads?

Neither Gas Pipe Sizing Calculator nor Ruud shows ads.

### Which is updated more often, Gas Pipe Sizing Calculator or Ruud?

Gas Pipe Sizing Calculator ships an update every 13 months, and Ruud monthly. Most recently, Gas Pipe Sizing Calculator was updated on October 15, 2026 and Ruud on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*